Room air ionizer



FIG. 1 is a front elevational view of a room air ionizer showing my new design, the rear being a mirror image of the front shown;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a room air ionizer, as shown and described. 